Stuffing-box.



J. L. GRAY.

' STUFPING BOX.

APPLICATION FILED JULY 8, 1913.

I 1,097,127, Patented May 19, 1914.

2 2 J a /sseL-fir y COLUMBIA PLANOGRAPH C0., WASHINGTON D c put blUNTTED STATES PATENT @FFTCE.

JESSE L. GRAY, OF LOS ANGELES, CALIFORNIA, ASSIGNOR OF ONE-FOURTH TOROBERT W. GUNN AND ONE-FOURTH TO 'WILLSIE A. SCOTT THOMP$QN, BOTH OF LOSANGELES, CALIFORNIA.

STUFFING-BOX.

earner.

To all whom it may concern Be it known that I, dress L. GRAY, a citizenof the United States, residing at Los Angeles, in the county of LosAngeles and State of California, have invented a new and usefulStufiing-Box, of which the following is a specification.

This invention is applicable to various uses, but is more particularlydesigned for the stufling boxes of polished rods of oil well pumps thepackings of which have to be frequently renewed on account of the roughusage to which such stufling boxes are cause of sand carried by the oil.

An object of the invention is to provide a stufiing box the gland ofwhich can be removed and inserted into the stufiing box body with greatease and convenience, and it is understood that such glands can be madeeither of divided form or of integral form.

An object of the invention is to provide for forcing the gland-home onthe packing by easily manipulated means, and without cramping thepolished rod.

The invention is regarded as broadly new and pioneer in that a followeris applied to the gland and is in slidable relation to the stufting boxbody, and compression means in oblique operative relation to thestuffing box body and the follower are provided to force the followertoward the bottom of the stufiing box thus to compress the packingtherein.

The invention may be carried out in various forms.

The accompanying drawings illustrate the invention.

Figure 1 is a fragmental elevation partly in section of a stufiing boxconstructed in accordance with this invention as it appears inoperation. Line M, Fig. 2 indicates the plane of section. Fig. 2 is afragmental plan of the parts shown in Fig. 1. Fig. 3 is a brokenelevation from the right of Figs. 1 and 2, the compression screw and aportion of the link and its nut being omitted, and the top of the tubingbeing broken away. Fig. 1 is a reduced fragmental elevation from theleft of Figs. 1 and 2.

The pump tubing 1 and polished rod 2 are of usual construction and thestuffing box body 3 is screw-threaded at its lower end and screwed intothe tubing 1 in the usual way, and also has the usual packing chamber 5.It is, however, provided with a lug Specification of Letters Patent.

Application filed July 8, 1913.

Patented May 19, 1914.

Serial No. 777,968.

6 having an under cut recess 7 that is preferably of circular form andextends over more than 180 so that its lip 8 will retain a cross-bar 9of a link 10 that is provided at its upper end with a nut 11 to receivea compression screw 12 which has a suitable handle 13 and is screwedthrough the nut 11 and into a seat 14: in a follower 15 that has arms 16to rest on the top of the gland 17, and also has a leg 18 with a slide19 that move along a vertical way 20 formed on the ptufising box bodyopposite the recess 7 and Thegland 17 has an annular boss 21 at itsupper or outer end and the arms 16 embrace the same sufiiciently to holdthe follower in place when the compression screw is not applied to it.

The opening 22 between the ends of the arm 16 is of suflicient width topass the polished rod 2, thus to allow the follower tobe easily put intoand removed from the position shown in Fig. 1 by first pressinghorizontally onto the rod and then down vertically onto the gland.

The cross-bar 9 has a cut-away portion 23 formed by flattened faces 24:,and which is narrow enough between said faces to be inserted into andcaught in the recess 7 when the link is turned sufficiently far to theleft in Fig. 1 to allow such insertion to take place, whereby the linkpivotally engages the gland.

To assemble the stufling box, the reduced portion 9 of the cross-barwill first be insorted in the recess while the link is turned down intoposition therefor on the side opposite its working position shown inFig. 1, and while the stufiing box body is free from the polishing rod.Then the link will be swung across the body to bring its nut onto theside of the stuffing box body opposite the recess.

hen the gland, the body and the link engaged therewith and extendingobliquely thereacross have been applied to the polished rod, asindicated in Fig. 1, and before the follower 15 is applied, the gland 17may be slid up the rod and the packing 25 inserted into the packingchamber 5 and hammered down into place by the gland 17 in the usual way.After the packing has been thus properly put into the chamber, the glandis brought into position, as shown in Fig. l, and then the follower isapplied being caught onto the gland by means of the arms 16 and boss 21,after which the link will be raised to bring the compression screw intoalinement with the socket 14, and such screw working in the nut will bescrewed home, thus operating as means held by the link and acting on thegland to'force the gland toward the stulling box body to compress andhold the packing in such chamber.

The socket 14 is so positioned on the follower 15 with relation to therecess 7 or lug 6 and the top of the gland 17 that when the packingchamber 5 is filled or nearly filled with packing 25 the force exertedby the screw 12 will, through the resolution of forces, move thefollower in a path that is parallel with the axis of the polished rod 2to seat the gland. Vhen properly assembled the link extends obliquelyacross the body at an angle of about 45, more or less, with the axis ofthe stufling box body and the gland.

The body is provided with a link supporting shoulder 26 at one or bothsides to hold the link and the compression screw from dropping down farenough to allow the reduced portion 9 to be withdrawn from the recess. 1The projecting ribs 27 forming extensions of the lug 6 at the sides ofthe body reinforce the body against breakage from strain exerted by thescrew.

It is thus seen that the compression means j comprising the link 10 andscrew 12 working in the nut 11 of the link is effective on the follower15 resting on the gland 17 and running on the stuffing box body 3, toforce the gland toward the bottom of the packing chamber and that thisis done without cramping the polished rod or canting the gland thereon;and that the cross-bar of the link is side flattened as at 24 so thatthe crossbar can pass the month of the recess I inone position and isextended transversely of the link so that said cross-bar isnonwithdrawable from the recess when the link extends in anotherposition obliquely across said body.

I claim 1. The combination with a stufling box body and a gland, of afollower resting on the gland and sliding on the body; a link held bythe body and provided with nut; and a screw in the nut to force thefollower to seat the gland.

2'. The combination with a stufiing box body and a gland; of a linkengaging said body and extending obliquely thereacross; a followerresting on the gland and sliding on the body; and means held by thelink, and acting on the follower to force the gland toward the body.

3. The combination with a stufling box body and a gland, of a linkpivotally engaging said body on one side and extending obliquelythereacross and provided with a nut; a follower resting on the gland andin slidable relation to the body; and a screw working in the nut andacting on the follower to move the gland toward the stuffing box body.

l. The combination with a gland, of a stuffing box body having a recesson one side; a link having a cross-bar caught in the recess said linkextending obliquely across the stuffing box body; a gland having a bossat its outer end; a follower resting on the gland and sliding on saidbody and embracing the boss; and compression means held by the link tomove the follower and gland toward said body.

5. A stufling box body having a lug on one side and a slideway on theother; a gland for such body; a follower caught on the gland and slidingon the slideway; a link held by the lug and extending obliquely acrossthe body, and means held by the link and acting on the follower to forcethe gland toward the stuffing box body.

,6. The combination with a rod, of a stuffing box body on the rod;packing in said body; a gland on the rod to compress the packing; saidgland having an annular boss around the rod; a link in pivotal relationto the body and extending obliquely thereacross; a follower having armsto engage the boss, said arms being spaced to pass the rod; and meansheld by the link to move the follower and the gland.

7. The combination with a rod, of a stuffing box body on the rod;packing said body; a gland on the rod to compress the packing; a link inpivotal relation to the body and extending obliquely thereacross; afollower having arms to engage the gland, said arms being spaced to passthe rod; and means held by the link to move the follower and the gland.

8. The combination with a stuffing box body and a gland, of a followercaught on the gland and slidable on said body and provided with asocket; a link in pivotal relation to the body, extending obliquelythereacross and provided with a nut, and a screw in the nut and seatedin the socket.

9. In a stnfiing box having a follower, a link and means held by thelink to move the follower; a stuffing box body having a lip on one sideto engage the link and being also provided with a shoulder to supportthe link when the same is not in use.

10. The combination with the stuffing box body provided on one side witha recess extending over 180, of a link having a cross bar flattened atthe side to pass through the mouth of the recess when in one positionand non-withdrawable through such month when extending in anotherposition obliquely across the stuffing box body.

11. The combination with the stuffing box gland for said body, and ascrew adapted to be swung in position to relatively move said body andgland and adapted to be swung 15 out of such position to allowWithdrawal of said gland.

In testimony whereof, I have hereunto set my hand at Los Angeles,California, this 2d day of July 1913.

JESSE L. GRAY. In presence of JAMES R. TOWNSEND, L. BELLE WEAVER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

